Display screen with an animated graphical user interface



FIG. 1 is a first image of a front view of a display screen with an animated graphical user interface showing our new design;

FIG. 2 is a second image thereof; and,

FIG. 3 is a third image thereof.

The dot-dash broken lines showing of a display screen in all views form no part of the claimed design. The dashed broken lines showing of the graphic elements form no part of the claimed design. 

CLAIM The ornamental design for a display screen with an animated graphical user interface, as shown and described. 